The royal mom, who is about seven months pregnant, kept her balance — and her shoe! She laughed off the mishap as she greeted staff from the Action on Addiction Community Treatment center, which she opened.

She recently returned from her winter wonderland tour in Sweden and Norway with Prince William. During the event on Wednesday, she took part in a discussion with healthcare professionals about the nine-week recovery program at the center in Wickford, about 35 miles east of London, before formally opening the center.